
\newlength{\seplinewidth}
\newlength{\seplinesep}
\setlength{\seplinewidth}{1mm}
\setlength{\seplinesep}{2mm}
\colorlet{sepline}{Gray}
\newcommand*{\sepline}{%
  \par
  \vspace{\dimexpr\seplinesep+.5\parskip}%
  \cleaders\vbox{%
    \begingroup % because of color
      \color{sepline}%
      \hrule width\linewidth height\seplinewidth
    \endgroup
  }\vskip\seplinewidth
  \vspace{\dimexpr\seplinesep-.5\parskip}%
}

\newcommand{\revcon}[2]{\textcolor{ForestGreen}{\textbf{Reviewer \# {#1} Concern \# {#2}}}}
\newcommand{\resp}{\noindent \textbf{Response:}}

\newcommand{\cmark}{\ding{51}}%
\newcommand{\xmark}{\ding{55}}%